[AltServer] Adds method to fetch installed apps on devices

AltServer/InstalledApp.swift

@@ -0,0 +1,29 @@
+//
+//  InstalledApp.swift
+//  AltServer
+//
+//  Created by Riley Testut on 5/25/21.
+//  Copyright © 2021 Riley Testut. All rights reserved.
+//
+
+import Foundation
+
+@objc(ALTInstalledApp) @objcMembers
+class InstalledApp: NSObject, MenuDisplayable
+{
+    let name: String
+    let bundleIdentifier: String
+    let executableName: String
+    
+    init?(dictionary: [String: Any])
+    {
+        guard let name = dictionary[kCFBundleNameKey as String] as? String,
+              let bundleIdentifier = dictionary[kCFBundleIdentifierKey as String] as? String,
+              let executableName = dictionary[kCFBundleExecutableKey as String] as? String
+        else { return nil }
+        
+        self.name = name
+        self.bundleIdentifier = bundleIdentifier
+        self.executableName = executableName
+    }
+}